Download PTU B.Tech 2021 Jan AE 3rd Sem 76402 Machine Drawing Question Paper

Download PTU (Punjab Technical University) B.Tech (Bachelor of Technology) / BE (Bachelor of Engineering) 2021 January AE 3rd Sem 76402 Machine Drawing Previous Question Paper

Roll No.
Total No. of Pages : 04
Total No. of Questions : 15
B.Tech. (AE) (2018 Batch) (Sem.?3)
MACHINE DRAWING
Subject Code : BTAE-304-18
M.Code : 76402
Time : 3 Hrs. Max. Marks : 60
INST RUCT IONS T O CANDIDAT ES :
1 .
SECT ION-A is COMPULSORY cons is ting of TEN questions carrying TWO marks
each.
2 .
SECT ION-B c ontains THREE questions carrying FIVE marks each and s tudents
have to atte mpt any T WO questio ns.
3 .
SECT ION-C contains TWO questions ca rrying T HIRTY ma rks each an d s tud ents
have to atte mpt any ON E q uestions.
4 .
Assu me any missing data suitably.
SECTION-A
Write briefly :
1.
What are locking devices and why are they used?
2.
Name any four head forms of rivets.
3.
What is the difference between a key and a cotter?
4.
Draw the symbol of first angle projection system.
5.
What is the function of a connecting rod in IC engine?
6.
Where is a foot step bearing used?
7.
What do you understand by a coupling?
8.
Differentiate between basic size and actual size.
9.
Explain the aligned system of dimensioning.
10. Define washer and give its various types.
1 | M-76402
(S2)- 642

---

SECTION-B
11. Draw free hand the half sectional front view of a protective type flange coupling on
proportionate scale.
12. Draw free hand the plan and sectional elevation of a single riveted double cover butt joint.
Take diameter of the rivet as 18 mm.
13. Draw the symbol and sectional representation of the following forms of weld :
a) Seam weld
b) Single-V butt
c) Single-J butt
d) Fillet weld
SECTION-C
14. Figure.1 below shows the details of a pipe vice. Assemble the parts and draw (a) front view
full in section (b) left side view. Also prepare bill of materials.
15. Figure.2 below shows the details of a stop valve. Assemble the parts and draw (a) front
view showing full section (b) right side view. Also prepare bill of materials.
2 | M-76402
(S2)- 642

---

FIG.1
3 | M-76402
(S2)- 642

---

(C.I.)
FIG.2
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
4 | M-76402
(S2)- 642

---